ACCUMULO-1880 create mapreduce module
ACCUMULO-2713 fixing Michael Allen's patch and adding test
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2654 Adds utility for creating empty rfile.
ACCUMULO-2717 kill the gc first, increase the timeout for the ReadWriteITs
Merge branch '1.6.0-SNAPSHOT'
Merge branch '1.4.6-SNAPSHOT' into 1.5.2-SNAPSHOT
ACCUMULO-2654 Update empty rfile utility to use jcommander.
Merge branch '1.5.2-SNAPSHOT' into 1.6.0-SNAPSHOT

Conflicts:
	core/src/main/java/org/apache/accumulo/core/file/rfile/RFileOperations.java
ACCUMULO-2654 adds a IT to the functional suite to cover recovery via empty rfile.

Had to update to use bcfile.Compression directly, since TFile ceased to be.
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-1219 Updated troubleshooting to include actions for corrupt rfiles.

Signed-off-by: Sean Busbey <busbey@cloudera.com>
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2713 checking for all sensitive and raw output stream for walogs
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2654 Remove debug information that only works on Hadoop 2
Merge branch '1.6.0-SNAPSHOT'
ACCUMULO-2716 Remove log-and-rethrow in Writer
Merge branch '1.5.2-SNAPSHOT' into 1.6.0-SNAPSHOT
Merge branch '1.6.0-SNAPSHOT'